Call Our Support Line
24 Hours / 7 Days a Week!  
Same Day Shipping Before 11 PM ET
My Cart
Shop By Vehicle
Shop By
Close Menu
Shop By Vehicle
Top Categories
All Categories

Top Categories

All Categories

Free Catalog
E-Mail Signup
My Account
Track Order
Gift Certificates

Brodix 1128008

WP LM -12 Series Cylinder Heads 300cc Intake Ports

Brodix 1128008


jegs shipping
FREE Shipping
Estimated ship date 01/25/18 if Ordered Today
Easy Returns
Easy Returns
Lowest Price Guarantee
Lowest Price Guarantee
Brodix 1128008 WP LM -12 Series Cylinder Heads 300cc Intake Ports $4,053.25
WP LM -12 Series Cylinder Heads
  • 300cc Intake Ports
  • 49cc Combustion Chambers
  • 2.180'' Intake / 1.625'' Exhaust Valve Sizes
  • Angle Plug
  • Bare, 2/pkg.

  • Brodix 1128008 Details

    WP LM -12 Series Cylinder Heads

  • 100% CNC Ported
  • This head is sold as an unassembled bare casting. It is finished machined and CNC ported. Also includes valve guides and valve seats installed. This head does NOT include studs, valves, springs retainers or locks.

    Cylinder Head Specifications
  • Intake Port Volume: 300 (CNC Ported)
  • Combustion Chamber Volume: 49cc
  • Valve Sizes: 2.180'' Intake / 1.625'' Exhaust ( 11/32'' Stem Diameter )
  • Spark Plug Configuration: Angled

    Facts and Related Components
  • Torque Heads: 70 ft-lb.
  • Torque Rocker Studs: 40-45 ft-lb.
  • Intake Gasket: Brodix p/n 158-MG1215
  • Head Gasket: Fel-Pro p/n 375-1003 (350ci) / 375-1004 (400ci) or Cometic p/n 245-C5399 (350ci) / 245-C5403 (400ci)
  • Exhaust Gasket: Fel-Pro p/n 375-1407
  • Head Studs: Brodix SK HSSB 13 (Aluminum Block)
  • Spark Plug Specs: 14mm Thread, .750'' (3/4'') Reach, Gasket Seat
  • Valve Angle: 12°
  • Angle Milling: .0065'' per cc
  • Flat Milling: .0055'' per cc
  • Pushrod Slots: 85/134
  • Stud Girdle: N/A
  • Rocker Arms: Shaft System with 85/134 Spacing (Check heads for intake offset) - T&D 22076
  • Lifters: .180'' Offset
  • Pistons: Special 12°
  • Pushrods: Special Length
  • Intake Face Angle: 5°
  • Exhaust Pattern: Standard and Stahl
  • Valve Centerline: 85/134
  • Spring Pockets: 1.550'' Out of the Box, May be cut to 1.625'' - No larger or deeper
  • Accessory Bolt Holes are Drilled
  • Recommended Intake Manifold: Edelbrock Victor 18° 2.9 Intake Manifold p/n 350-2955
  • Valley Plate: GM 24502652

  • Specifications:

    Manufacturer's Part Number:

    Ported Head Flows 387 CFM!
    12° Intake & Exhaust Valve Angles

    The 100% CNC ported WP LM -12 is the latest in dirt late model technology. It features a 12-degree valve angle, 85/134 valve spacing, and newly designed intake and exhaust ports. The intake port on this head flows 387 cfm with a 2.180'' intake valve. The exhaust port flows 270 cfm with a 1.625'' exhaust valve. The 100% CNC ported offering from Brodix is destined to become the industry standard. This head has special valve centerlines and dowel location requiring special components. The LM -12 series has two exhaust bolt patterns available and a 5° intake face requiring a special intake manifold and components (compatible with 18° intakes/headers). Every casting is poured from A-356 virgin aluminum and tested before Brodix utilizes their in-house processes such as finish machining and heat treating to assure that you receive the best products for your hard-earned money. Other features include a thick deck surface that is compatible with nitrous, drilled and tapped holes on the ends for standard drive accessories, phosphorous bronze valve guides and interlocking valve seats. Sold in Pairs. !

      VALVE SPRING   Specs
      1.550'' Diameter Valve Spring for Mechanical Roller Lifter Cam
  • Spring Pressure Open: 550 lbs.
  • Spring Pressure Closed: 240 lbs.
  • Installed Height: 1.950''
  • Max Lift: .700''
  • Items You Need

    Before you leave us... Receive a free catalog or join our email list

    Sign up to receive our catalog or subscribe to our email list now to see our exclusive email only specials, new products, and offers!

    Request CatalogJoin Email List